Home / 13,637.18-18,812.98-7,972.16

Finding the Fourth Proportional to 13,637.18, 18,812.98 and 7,972.16

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Solution

The fourth proportional to 13,637.18, 18,812.98 and 7,972.16 is: 10,997.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,637.18 : 18,812.98 = 7,972.16 : x
  2. Step 2: Convert to fraction form
    13,637.18/18,812.98 = 7,972.16/x
  3. Step 3: Cross multiply
    13,637.18x = 18,812.98 × 7,972.16
  4. Step 4: Simplify right side
    13,637.18x = 149,980,086.64
  5. Step 5: Solve for x
    x = 149,980,086.64/13,637.18
  6. Step 6: Final answer
    x = 10,997.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.